🔍 Key Concepts

• Certificate of Inspection (COI) and what information it contains • Who sets the maximum allowable working pressure (MAWP) on a vessel’s boilers or pressure vessels • Difference between regulations/manuals/guides versus official certificates issued by the Coast Guard

💭 Think About

• Ask yourself: which of these documents is an official authorization from a regulatory body that limits how the vessel and its machinery may legally operate? • Which option is most directly tied to what an inspector actually writes and approves for that specific vessel, including pressures? • Which documents are more like references or handbooks, and which one is a formal legal limit that the vessel must not exceed?

✅ Before You Answer

• Verify which item is a formal Coast Guard document issued specifically to that vessel • Confirm which choice actually lists allowed pressures, capacities, and operating limits for the plant • Make sure you distinguish between generic engineering references and the document that sets legal operating limits for that vessel